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Effects of nuruk extracts on secretion of MMP-2 and MMP-9 by gelatin zymography. HaCaT cells were treated with 100 mg/mL of NEs for 24 hr, followed by exposure to 20 mJ/cm2 of UV for 30 min prior to harvest of cell media. Gelatin zymography was performed for determination of gelatinolytic activities of nuruk extracts.
